st

suckless terminal - with my changes
git clone https://pi.duncano.de/git/st.git
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commit abe85c0e997ed1882c69bde511f7e2746f68d9ab
parent 091ae143ce09e930fd61dae15f8d613c7eab5a61
Author: Christoph Lohmann <20h@r-36.net>
Date:   Sat,  3 Nov 2012 03:24:22 +0100

Fixing an out-of-bound bug in the selection code. Thanks Szabolczs Nagy!

Diffstat:
config.def.h | 2+-
st.c | 31+++++++++++++++++++++++--------
2 files changed, 24 insertions(+), 9 deletions(-)

diff --git a/config.def.h b/config.def.h @@ -2,7 +2,7 @@ /* appearance */ static char font[] = "Liberation Mono:pixelsize=12:antialias=false:autohint=false"; -static unsigned int borderpx = 2; +static int borderpx = 2; static char shell[] = "/bin/sh"; /* double-click timeout (in milliseconds) between clicks for selection */ diff --git a/st.c b/st.c @@ -72,8 +72,6 @@ #define ATTRCMP(a, b) ((a).mode != (b).mode || (a).fg != (b).fg || (a).bg != (b).bg) #define IS_SET(flag) (term.mode & (flag)) #define TIMEDIFF(t1, t2) ((t1.tv_sec-t2.tv_sec)*1000 + (t1.tv_usec-t2.tv_usec)/1000) -#define X2COL(x) (((x) - borderpx)/xw.cw) -#define Y2ROW(y) (((y) - borderpx)/xw.ch) #define VT102ID "\033[?6c" @@ -582,6 +580,22 @@ selinit(void) { sel.xtarget = XA_STRING; } +static int +x2col(int x) { + x -= borderpx; + x /= xw.cw; + + return LIMIT(x, 0, term.col-1); +} + +static int +y2row(int y) { + y -= borderpx; + y /= xw.ch; + + return LIMIT(y, 0, term.row-1); +} + static inline bool selected(int x, int y) { int bx, ex; @@ -603,8 +617,9 @@ getbuttoninfo(XEvent *e, int *b, int *x, int *y) { if(b) *b = e->xbutton.button; - *x = X2COL(e->xbutton.x); - *y = Y2ROW(e->xbutton.y); + *x = x2col(e->xbutton.x); + *y = y2row(e->xbutton.y); + sel.b.x = sel.by < sel.ey ? sel.bx : sel.ex; sel.b.y = MIN(sel.by, sel.ey); sel.e.x = sel.by < sel.ey ? sel.ex : sel.bx; @@ -613,8 +628,8 @@ getbuttoninfo(XEvent *e, int *b, int *x, int *y) { void mousereport(XEvent *e) { - int x = X2COL(e->xbutton.x); - int y = Y2ROW(e->xbutton.y); + int x = x2col(e->xbutton.x); + int y = y2row(e->xbutton.y); int button = e->xbutton.button; int state = e->xbutton.state; char buf[] = { '\033', '[', 'M', 0, 32+x+1, 32+y+1 }; @@ -656,8 +671,8 @@ bpress(XEvent *e) { draw(); } sel.mode = 1; - sel.ex = sel.bx = X2COL(e->xbutton.x); - sel.ey = sel.by = Y2ROW(e->xbutton.y); + sel.ex = sel.bx = x2col(e->xbutton.x); + sel.ey = sel.by = y2row(e->xbutton.y); } }